diff options
Diffstat (limited to 'drivers/vfio/pci/vfio_pci_rdwr.c')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci_rdwr.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c index 210db24d2204..5ffd1d9ad4bd 100644 --- a/drivers/vfio/pci/vfio_pci_rdwr.c +++ b/drivers/vfio/pci/vfio_pci_rdwr.c @@ -124,11 +124,14 @@ ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf, void __iomem *io; ssize_t done; - if (!pci_resource_start(pdev, bar)) + if (pci_resource_start(pdev, bar)) + end = pci_resource_len(pdev, bar); + else if (bar == PCI_ROM_RESOURCE && + pdev->resource[bar].flags & IORESOURCE_ROM_SHADOW) + end = 0x20000; + else return -EINVAL; - end = pci_resource_len(pdev, bar); - if (pos >= end) return -EINVAL; |